Numbers!

123456789
Across
  1. 3. twenty one - four = ?
  2. 4. How many days in July?
  3. 6. 4 x 10 = ?
  4. 7. How many days in a week?
  5. 8. six x two = ?
  6. 9. five, ten, fifteen, ?
Down
  1. 1. two, four, six, ?
  2. 2. five x three = ?
  3. 4. An unlucky number
  4. 5. How many days in June?
  5. 6. two + three = ?
  6. 7. How many minutes in one hour?
  7. 9. How many days in the weekend?